Question about VIZIO P702ui B3 70 Inch Ultra Smart

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What is the AC voltage input range of the power supply board. I think it is 110-240 volts. Please advise. For immediate reference, please see the image of the power supply board by clicking http://as

What is the AC voltage input range of the power supply board. I think it is 110-240 volts. Please advise. For immediate reference, please see the image of the power supply board by clicking http://assets.shopjimmy.com/media/catalog/product/cache/1/image/f8f28dc4a19c21aeb55ee5774693fb5d/s/h/shopjimmy-09-70car040-00-top.jpg

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110 > 240VAC is the input voltage. Auto select by the regulator board inside. Electro help

Posted on Mar 28, 2015

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Samsung UN55B7000WF RED LIGHT FLASHES CLCIKING SOUND BACKLIGHT FLASHES


Hi Ab7775,

1. Pl check st by 5 or 3.5 volts.

2. If it is ok, check power on 5 or 3.5 volts. Is power on voltage stable ? If this is pulsating with cliking sound, it is the main board. Otherwise it should be the power supply.

3. Please also check all the other voltage for short with ground.

You can also check the power supply board separately. Remove the connector going to main board. Put a 1k res between st by and power on pin. Plug in the ac, if all the voltage appear, your power supply is ok.

I am on line if possible please do this checking and let me know the result.

Good luck.

Aug 09, 2016 | Samsung Televison & Video

2 Answers

Wht kind of current comes out?


The computer's switch mode power supply produces DC (direct current) electricity.

Nov 05, 2012 | Computers & Internet

1 Answer

Power supply problem no switching


( "Power Supply Problem Not Switching "???? )

How do you know it's Not Switching? Do you mean the TV wont turn on when you push the power button on and off on the TV and also with the remote control unit? Is that what you mean? If YES! Then, If your Vizio TV wont turn on and has NO-PICTURE, NO-SOUND and a BLACK SCREEN, Then the TV has an AC or a DC Voltage Problem.

1 - First, check the wall outlet socket by pluging in a lamp to see if you have 110 AC-volts there. If the lamp works, the wall outlet is OK! That means the problem is inside the TV.

2 - Before, you remove the back off the TV. I want to *(CAUTION - YOU)* The Power Voltages inside your TV are Very, DANGEROUS!!! There is 110 AC Volts at a 20-AMP-Rating ***CAN BE A LETHEL DEADLY SHOCK HAZARD to HUMANS!!!*** Also there are DC Voltages ranging from 3.3 to 24 volts. And R-F- VERY-HIGH-VOLTAGE of 20,000 Volts or More.

3 - You will need hand tools and a Digitle Volt Ohm Meter to check AC & DC Voltages and the OHMS Meter section to check resistors, capacitors, coils, grounds and contacts.

4 - With the Back removed, and no-power to the set. Inspect the power board for any signs of BURNED, LOOSE or BROCKEN parts like resistors, capacitors, coils, fuses on all boards. If you discover damaged parts, make a list of them. Then you must deside if you are qualified to do the on board repair or just order a new replacment board.

5 - If on the other hand you didn't discover any damaged parts by your inspection, It's time to put the Meter to good use. Plug the TV power cord to the wall outlet. Set the Meter for AC - voltage range of 200 or more. check for 110 AC volts going to the power supply board fused inputs.
If NO replace the cord. If YES, look on the board for voltage test points marked on the board. (SAMPLE!) 3.3 vdc, 5 vdc, 12 vdc, 24 vdc, and so on. Set Meter for DC Volts now, range 50 to 100. Put the black lead to ground and the RED lead to each test point marked on the board while repetetedly pressing the TV power on & off button..

6 - If ANY of the DC voltages were LOW, WRONG or MISSING, The Main power board is defective and needs to be removed and replaced with a new one. Write down the board number that is on the board and use that number to order the new one. You can order it on the Net!

*****(NOTE)***** If you are not an electronics tech. don't try to fix the old defective board... but, keep it handy, you might need it for parts later. :-)

Hope This helped... GOOD LUCK! NOW, GO FIX YOUR TV!

Oct 08, 2012 | Vizio L32 32 in. LCD HDTV

2 Answers

PANASONIC TH-42PD60U will not power on/no power light/have already replace power supply


If your power supply is new try to check the power cord..If you have a volt meter or multimeter range in AC..check the voltage input of your power supply it should have 110v to 240 volts depends on your electrical supply in your outlet..

If no voltage replace the power cord..Hope it helps..

Mar 06, 2012 | Panasonic TH-42PD60U Television

1 Answer

Will not come on was working fine then shut off and won't come back on


Good day!

Your power supply looks like this?

nineng_8.jpg
Please follow this steps on how to fix that problem:

  1. Remove the back cover.
  2. Try to look at the power supply board.
  3. Plug-in the TV and power it on again to perform a voltage data.
  4. Then check the input voltage of the power supply it should have 110vac or 220vac using multimeter (range on AC).If none the power cord is broken,replaced it.
  5. If you have input voltage next is to check the output voltage of the power supply board.It should have 5vdc for the system board or main board,12vdc for the audio and 24vdc for the inverter board (back-light)using multimeter (range on DC).
  6. If you don't have a output voltage please check the following parts:
  • Fuse---------Check if it is busted or blown.
  • Transistor-------Check if it is shorted using multimeter (range in Diode test).It should have no reading on reverse testing.
  • Resistor--------Check if it is open or change value using multimeter (range on Ohms).
  • Capacitor------Look at the actual image of it.If it is leak or bulged on the top.
If you found any of the defects parts like on the mention above.Please replaced it with same type,ratings and value.

If you have replaced the defective parts and the problem is still there.The power supply board could be got a major trouble or damaged.If it is happen your choice is to send it to the nearest service center or you buy a new power supply board.
Just click this site to order a new power supply board.
http://www.electronica-usa.com/Merchant2/merchant.mvc?

I hope this solution will be helpful.Thank you and good luck.

May 13, 2011 | Protron PLTV-26 26 in. HD-Ready LCD...

1 Answer

Having trouble turning my Tv on,have to turn it on and off/plug and unplug for a while to get pic and sound.Can you help?


Good day!

The problem of your TV could be the power supply.

Please follow this steps on how to fix that problem
:

  1. Remove the back cover of your TV.
  2. Try to look at the power supply board (it usually directly connected to the power cord)
  3. Plug-in your TV and power it ON to perform a voltage data.
  4. Check the input voltage of the power supply.It should have 110vac or 220vac it depends the input voltage of your TV that comes on the outlet.Use multimeter tester (range in AC)
  5. If the input voltage of the power supply doesn't have a reading,the power cord is defective you need to replace it.
  6. If the input of the power supply have 110vac or 220vac.Please check the output voltage of the power supply using your multimeter tester (range in DC).Normally it should have 5vdc for the system board,12vdc for the audio system and 24vdc for the inverter board (back-light).Also look for the leak/bulged on the top capacitor.If any replace it with the same type,ratings and value.
  7. If the you have done all procedures above and you have found any defects and the output voltage are complete.The problem could be the the system board or main board of your TV.This is not for D.I.Y because the parts are surface mount and its very sensitive.If the problem is main board you have to replaced it,buy a new main board its available at the market.
  8. When the output voltage of the power supply doesn't have reading,please check the following
  • Fuse---look if it is busted
  • Power transistor----If it is shorted (range in diode test)
  • Resistor----If it is open or change value (range in ohms)
If you found any defective parts replaced it with the same type,ratings and value.


I hope this solution will be helpful.Thank you and good luck.
Don't forget to rate my answer thank you.

May 09, 2011 | Televison & Video

1 Answer

I was watching tv and the tv turn off itself than no ligues no power and i try to turn on again and nothing happen what i should do?


Good day!

The problem of your TV is the power supply board.

Please follow this procedure to fix that problem:

  1. Remove the back cover of your TV.
  2. After that,look for the power supply board.
  3. Next,check the input voltage of the power supply using multimeter tester (range in AC).If the power supply don't have input voltage,replace the power cord.
  4. If the power supply board have input voltage,next is check the output voltage of power supply it should have 5vdc for the system board,12vdc for the sounds and 24vdc for the back light inverter.
  5. If you don't have output voltage of the power supply.Please check the fuse if busted and the power transistor if it is shorted,replace it with the same type,ratings and value.Also look for any leak/bulged on the top capacitor.
  6. After you done this steps and you found and replace the defective parts.Plug-in your TV and power it ON to test if it is OK.
The power supply looks like this:
bugoy31_3.jpg

If this solution will be help you to fix your problem,please don't forget to vote and rate my answer.Thank you for using FixYa and good luck.

May 08, 2011 | Vizio L37 Television

1 Answer

TV won't turn on. Is there a fuse that needs replacing?


Good day!

When the TV is not turning ON it doesn't mean that there's a busted fuse inside although it have a possibility.There are a lot of causes to be considered.Like shorted transistors,leak capacitors open resistors and shorted diode.

Follow this D.I.Y procedures to find the exact problem of your TV.
  1. Remove the back cover of your TV.
  2. After that,find the power supply board.
  3. If you already found the power supply,plug-in your TV and power it ON.Check the input voltage of it,using multimeter (AC range).If the power supply have no input voltage the problem could be the power cord.Replace it.
  4. If the power supply have the input voltage,try to test the output voltage if have 5vdc for the system and logic supply,12vdc for the sounds and 24vdc for the back-light inverter.Use your multimeter tester (DC range) to test that.
  5. If the power supply have a voltage outputs such as 5vdc,12vdc and 24vdc and the problem is still there.The problem could be the main board.Replace it with the same type and model # because the main board is no very difficult to fix and its very sensitive.
  6. If the power supply have no output voltage or the voltage is too low,just ignore the step # 5 because the problem is not on the main board,its on the power supply board.
Check the following to fix the power supply board:
  • Fuse: Check the fuse if it is busted or blown.
  • Power transistor (regulator): Check the regulator if it is shorted or leak.
  • Resistor: Check the resistors specially the one that have a low resistance that near the power regulator.
  • Capacitor: Also check the capacitors if it is leak or bulging top.
NOTE: If you found any defective parts or components that mention above replace it with the same value,type and ratings.


Thank you and good luck.Please don't forget to vote and rate my answer.

May 08, 2011 | Televison & Video

2 Answers

A friend from US gave me hp netbook-1103135- is it 110 or 220v please advise thanks


It most likely has a 110V plug on the power supply; however, all you have to do is buy the appropriate 220v cable for the power supply for your country, and it should work fine on 220V.
External power supplies are designed to use either 110v or 220v -- all you have to do is change the cable or use an adapter and you're good to go.

Dec 20, 2010 | HP Computers & Internet

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